if i take btech i will be in some local collage but when i take bsc comp sci i can join srm university chennai which will be better for Ai

AI is the specialisations course, first get into a decent college which gives you B.Tech degree that is it and then develop your skills.

AI is something which is not taught at B.Tech or B.Sc. levels. So choose your initial path such that you can go for further studies and then pursue AI in higher education.